Vector

用戶7639

2007-10-10 8:14 am

教我
http://img.photoamp.com/pa/07/10/09/ivEbO8yic.jpg

回答 (1)

魏王將張遼

2007-10-10 5:36 pm

✔ 最佳答案

(a)

圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Oct07/Crazyvector10.jpg

參考: My Maths knowledge

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